Dr. Guoliang Zheng Profile

Dr. Guoliang Zheng

at Shenzhen University

SPIE Involvement:

Author

Publications (2)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 10 November 2020 Paper

Generation and modulation of Airy beam through quasi-phase-matched Pockels effect

G. Zheng, J. Liu, Q. Wu

Proceedings Volume 11604, 1160404 (2020) https://doi.org/10.1117/12.2580111

KEYWORDS: Photonic crystals, Wave propagation, Nonlinear optics, Fourier transforms

Read Abstract +

A new way to generate Airy beam through quasi-phase-matched (QPM) Pockels effect in a 2-dimensional (2D) quadratic nonlinear photonic crystal (QNPC) is presented. Taking advantage of binary modulation, one can fabricate such a 2D QNPC, in which the QPM condition for Pockels effect is satisfied along x-axis, while the cubic phase for Airy beam is imposed along y-axis. When a Gaussian beam propagates along x-axis of the 2D QNPC with an external electric field, the QPM Pockels effect takes place, resulting in an generated wave with Airy beam’ Fourier spectrum. When performing an optical Fourier transform (FT) on the output, we can obtain the desired Airy beam. Thanks to the QPM Pockels effect, the intensity of Airy beam can be modulated efficiently, which is applicable in optical communication. The generation and modulation of Airy beam can be achieved simultaneously in a single chip, which is advantageous for integration. It should be noted that, this method can also be employed for the other desired wave-front and provides full control of the intensity of the generated beam.

Proceedings Article | 28 February 2017 Paper

The propagation characteristics of circular Airy beam with low-pass filtering modification

Guoliang Zheng, Xiangquan Deng, Shixiang Xu, Qingyang Wu

Proceedings Volume 10256, 102561L (2017) https://doi.org/10.1117/12.2256958

KEYWORDS: Linear filtering, Apodization, Beam propagation method, Fourier transforms, Optical filters, Optical manipulation

Read Abstract +

The propagation characteristics of the circular Airy beam (CAB) modified with low-pass filtering is investigated in details in this paper. Based on a modification of the angular spectrum of CAB, we get a new kind of CAB constructed with low frequency spectrum, which is called “LCAB” for short. A suitable low-pass filter is introduced to cut off the high frequency angular spectrum and maintain the low frequency domain mainly affecting the front light rings of CAB. Two apodization parameters are employed to optimize the low-pass filtering, which influence the propagation characteristic of the LCAB. Fortunately, the abruptly autofocusing property, the most important property of CAB, is still maintained in LCAB. What is more, the initial ring number and the focal spot length can be controlled by adjusting the two apodization parameters. If the two apodization parameters are appropriately chosen, one can form an elegant optical needle which plays an important role in optical manipulations. The numerical results show that the less front light rings are, the longer the optical needle is. It should be noted that the width of the optical needle will increase as long as the length increases, and lead to the decline of the maximum intensity of the optical needle.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years